When crossing a black rooster with a white chicken, the chickens are speckled, and in F2, a splitting is observed 1 black: 2 speckled: 1 white. Determine: 1) the nature of color inheritance; 2) phenotype of offspring from crossing speckled with black and white.
1) Inheritance of a trait by the type of incomplete (intermediate) dominance;
2) from crossing speckled with black you can get speckled and black chickens in a ratio of 1: 1; from crossing speckled with white, you can get speckled and white chickens in a 1: 1 ratio.
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